linux-kernel - Re: [RFC] B+Tree library

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Message-ID: <20081031131524.GF18182@logfs.org>
Date:	Fri, 31 Oct 2008 14:15:24 +0100
From:	Jörn Engel <joern@...fs.org>
To:	Johannes Berg <johannes@...solutions.net>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [RFC] B+Tree library

On Fri, 31 October 2008 14:07:16 +0100, Johannes Berg wrote:
> 
> OTOH, there is no need to put the SSID in if I put a small list into
> each node, effectively using the tree instead of the hash table and then
> disambiguating the unlikely case of multiple SSID in a list.

Exactly.  In sunny wheather btrees can be a good implementation for hash
tables.  They can grow and shrink as needed, without taking the latency
hit for rehashing every single item.  Until lock contention or pingpong
shows otherwise. :(

Most likely the answer to bad whether is RCU.  Patches are welcome.

Jörn

-- 
They laughed at Galileo.  They laughed at Copernicus.  They laughed at
Columbus. But remember, they also laughed at Bozo the Clown.
-- unknown
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